Continuous build

Travis CI build log:

Final .NET Release

Rebuilder was initially written in C# for .NET 2.0. While this allowed for quick development, it limited its scope since .NET was never available for Windows 95 (only 98SE+) and C# code cannot be injected into LEGO Island. Eventually, Rebuilder was largely rewritten in C++, but some functionality is still missing so some users may need this old .NET release.